4049 Oscillator with Mark and Space (CB24857E)

With mark and space adjustment this circuit was found in November 1984 Radio Electronics. The base frequency depends on C1.

Various voltages power supply (CB20211E)
This multiple power source, with two transformers was found in American documentation from the...
Integrated Transmitter MC2833 (CB14567E)
We found this transmitter circuit with a single chip in the Motorola Linear Databook of 1990. The...
Mark and Space CMOS Oscillator (CB19233E)
This oscillator can use inverters or connected AND or NAND gates as such. The signal produced with...